Brake for high-speed warrers



Feb. 24, 1931. E. H. TREVETT ET AL BRAKE FOR HIGH SPEED WARPERS Filed Jan 24, 1930 2 Sheets-Sheet l lnvezzYoTs Anya;

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1931. E. H. TREVETT ET AL 1,794,345

BRAKE FOR HIGH SPEED WARPERS Filed Jan. 24, 1930 2 Sheets-Sheet 2 Fig.2.

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Patented Feb. 24-, 1931 EARL H. TREVE'TT AND HARRY A. DAVIS, 03 'iGLDB-APEE COBPGHJATION. OI? EIQPEJJ LEE, llEASSl-LGZ US BLAIN- QSSACH'USETTS, ASSIGN'OBS ESTES, A CORPQRAT ION OF 7 BRAKE FDR EZIGI-i-SPEED WAR-FEES Application filecl January 24-, 1930. Serial No. 422,989.

der, considerable overthrow is likely to occur when, upon the stoppage of the warper, when a brake is applied in the usual manner to the shaft of the driving cylinder or to the cylinder itself.

One of the objects of the invention is to provide a brake acting directly upon the warp beam itself.

Another object of the invention is to pro vide a warp-beam brake applicable to one or preferably both ends of the warp beam.

A further object of the invention is to provide a warp beam brake comprising a frictional disk or annulus detachably secured to the head of the warp beam to permit renewal when the friction surface becomes worn.

A further object of the invention is to provide a warp beam brake in which braking members are applied simultaneously equally to both ends of the warp beam in a direction substantially parallel to the axis of the warp beam. thereby avoiding undesirable end thrust upon either end of the warp beam.

A further object of the invention is to'provide a warper in which the warp beam gudgeons are carried upon gudgeon blocks which are movable along preferably arcuate arms extending forward of the driving cylinder with braking mechanism for the warp beam which will engage substantially the same anular frictional areas upon the end or ends of the warp beam irrespective of the position of the gudgeon blocks as they are moved along the gudgeon-supporting arms.

A further object of the invention is to pr vide gudgeon blocks which are movable along the gudgeoil-supporting arms with self-ahm lug bearings operable to maintain. pr per alinement of the shafts, notwithstanding the strain imposed upon the gudgeonsby the application of the respective brakes to the ends of the warp beam.

Another and most important object/of the invention is to provide brakes acting con jointly upon the driving cylinder and upon theiwarp beam operable rapidly to arrest the rotation of both the cylinder and the Warp beam without substantial slippage therebetween.

A. further object of the invention is to provide a construction in which the brakes for the cylinder and the warp beam are con jointly actuated from the same source of power. p

Another object of the invention is to provide a construction which will produce a conjoint action of the cylinder brake and the warp beam brake which will not requireas close adjustment as independent braking mechanism applied respectively to the cylinder and to the warp beam.

These and other objects and features of the invention will vmore fullyappear from the following description and the accompanying drawings and will be particularly pointed out in the claims.

in the drawings 1 is a side elevation of such parts of a warper as are required to show the embodi meat of the present invention therein;

Fig. 2 is an enlarged detail view of aportion of the head of the warp beam and one form of break mechanism applicable thereto mounted upon the gudgeon-supporting arm; 7

lea

- and other usual adjunctive devices over the beam.

der 4 is rotated the frictional engagement of roll 10 and are secured at their ends in any suitable manner to the barrel 5 of the warp Consequently, as the driving cylinthe drum with the beam barrel rotate the beam, winding the warp yarns thereon. The yarn mass on the warp beam therefore gradually increases in diameter until the beam is filled. Consequently also, the total weight of the beam and yarn mass likewise gradually increases. The total weight of the warp beam and the yarn wound upon the same is very considerable amounting in many instances to six or seven hundred pounds when the beam is filled, and the rapid rotation of the warp beam imparts to it. a very considerable momentum.

Upon detection of the breakage of a warp the drop wires act through usual mechanism to actuate the stop mechanism and to knock off the latch which retains the brake mechanism in inoperative position and thereby permlt a spring, whlch 1s connected to the brake lever as in usual constructions, to apply the brake.

As above stated, the presentinvention contemplates the provision of means for quickly arresting the rotation of the warp beam by means of a brake applied directly to one or preferably to both ends of the warp beam and which desirably is actuatedconjointly with a brake applied to the driving cylinder.

'2 Both brakes desirably are actuated from the same source of power.

A preferred embodiment of the invention is illustrated herein as applied to a warper of the type disclosed in the application of Clare H. Draper and Earl H. Treve-tt, Serial Number 323,842, filed December 5, 1928. In that construction the gudgeons of the warp beam are journalled in gudgeon blocks which are slidably mounted uponand movable along gudgeon-supporting arms which extend forwardly of the driving cylinder and are of conveXedly arcuate form. In that construction means are provided for preventing increase in the resultant pressure upon the driving drum due to the increase in the total weight of the beam and yarn as the yarn is wound upon the beam. Such mechanism desirably is employed in the present construction. It will, however,'be understood that the present invention maybe employed in other types of warpers within the meaningand scope of the claims.

In the embodiment of the invention disclosed herein both end frames are of a similar character and the mechanism for supporting both ends of the warp beam are alike and similar braking mechanisms are provided for both ends of the driving cylinder and both ends of the warp beam, such braking mechanisms being actuated. from a rock shaft having similar arms at both ends for actuating the brakes conjointly.

As illustrated herein internal brakes are provided for each end of the cylinder, such brakes comprising brake shoes 11 and 12 which are pivotally mounted at their lower ends upon studs 13 and 14: extending inwardly from brackets 15 which are mounted upon the end frames. The. brake shoes 11 and 12 are provided with webs 16 and 17 having pivotal studs 18 and 19 to which are connected toggle links 20 and 21, the pivots 22, which form the knee of the toggle, having bosses 23 which are adjustably connected by links 24 toarms 25 of a rock shaft 26 which extends across the warper and is mounted in.

Pedal levers 31, which are rigidly connected to the rock shaft 26, extend forwardly and are provided at their ends with a connecting pedal 32 which when depressed rocks the shaft 26 in a direction to move the end of the brake-actuating lever downwardly, thereby releasing the brake shoes 11 and 12from engagement with the inner wall of the cylinder. v

The usual means for locking the brakes out of engagement are provided and comprises a rod or latch 33 which is pivotally mounted at its lower end upon the brake lever 27 in proximity to the end thereof and extends vertically upwardly therefrom through a slot in a keeper 34 and is provided near its upper end with a shoulder 35 adapted when the brake-releasing lever is de pressed by the pedal to engage beneath the keeper 34E.

A rock shaft 36, operated by the usual detector mechanism (not shown), is provided with an arm 37 which, upon actuation of the rock shaft by the detector mechanism,'engages the upper portion of the vertical rod 33 and forces the shoulder 35 thereof out of engagement with the keeper 34, thus permitting the spring 28 to raise the ends of the brake levers 27 and apply the brake. By

The ibraking'i mechanism above described hasbeenfheretofore employed 1 and in itself l forms no part of thelpresent invention, which relates primarily to. means 1 for: applyingaan .f

auxiliary brake 'tOi onesor preferably both ends: of the: warp beanr and which desirably is conj ointly operable with the cylinder; brak-w.

ing mechanism. I 1 As hereto'fo-reedescribedthe *gudgeonflof '.;the:warp beam is mounted in gudgeon' blocks 38 which are slidablymountedupon'tlieioon c vex arcuate 'ntrac'ks' :5 39? forming Tithe -;.end portions: of ggudgeon-supporting armsiOii The 'gudgeon supportirig: a-rms are pivotally E 2e mountedupon-stu'd: shafts-'41- extending ini wardly from the brackets 80 and the: rearends i :of the gudgeon supporting arms. w are provided with pivotal ly -,mounted blocks 42- having; apertures provided with screw as -threadedwalls: which Zare aengaged by' screw threaded shaitsdil whichfl are mounted in bearings in suitable brackets 44 secured to: the' end ifram'es andi'are provided:- with bev-f eled gears 45 -whieh engage-complementary so beveled gears 46 .upon-t-a cross shaft 47" which ismounted in bearingsgin thebracketsi ls-and i in the end framesand provided-with square ends to receive a wrench I By rotating gtrheri shaft 47 the gud geonsupporting; arms are 36 i raised and -lo-wered as :desired ----to-- permit doflin-g of the, beam or to raisea new beam-v: into proper I operative -relation to the drivmg cylinders In the constructionillustrated therbrakes lfor the Warp beam; are mounted upon the;

arcuate portion of the igudgeon supporting y arms and comprisebraekets 48-Which are see cured by bolts or screws-to downwardlyex tending webs or" the gudgeon supporting arms. Therbraeketsw-48tare provided with bosses 49 having pivotalshaftsfsO upon' whi ch are mounted brake armsfil havingcur ve'd ofi' set portions 52, and end portions 53 extendeing in substantial parallelismwith the outer se-facesofthe-heads 6 ofthe warperr Brake-i shoes 54,. which may be provide-d withrfrics1 tionmembers -55 to engage'the. head ofth e: warp -,beam,- are pivotally mounted centrally; of their widthupon shafts 56 mounted in 55 bosses in the end portions 53 ofthefbrake arms, and spiral springs 57 a nd- 58' are interposed between the brakeshoes 54"andthe' end portions 53' of'j'saidarmsat equaldis tanc'es from the pivotal shaft "56; -The'se I springs;'-in conj unction with the pivot, 5 are effective to equaliie the pressured-different portions of the brake "shoe': are-a= upon the" warpbeam head? 7 g The opposite ends 59:or the brake arms 51 J extend beyondthe piyotsi50-npon which -saidi arms are mounted and springs60', which are interposed bet'weensthe sections :59} anrlsthej-v brackets 48, serve normally to withhold. the brakes it'rom" engagement with Ithe' heads of the Warp beam.

The brackets 48 desirably are securedeen trally of the arcuate portion ofthe gudgeon supporting 'arm' and the brake arm's desirably extend substantially radially With-Qrespect to: said arcu'ate "portion 'sothat thel brakes Will engage substantially the same" surface area of the warp beam heads as the warplbeam is moved outwardlyupo'n the:

arcuate portion of the gudgeon-supporting Thusthe effective resistance of the brake to rotation of'theWa-rp beam W'illb substantially the same irrespectiveof thepo sition of the warp beamalong thegudgeom supporting'armx The outer surfaceof the curved-portion 52 oi'each brake-arm is curved to pro ide a suitable cam 61 which is adapted to be engaged by a camfollowerpreferablyin-the fonnofa roller 62 which;ismountedupon the cylindrical portion "63 016 an arm 6% of a bell crank lever which is I pivotallymonnt+ ied upon-a stud shaft '65 extending outwardly from" th'e brack-et 48. The other arm '66 of the bell crank lever 1 extends {substantially vertically downwardly "andhas an enlarged end portion 1 having-'an aperture 67. Rod's 68 extend-through theapertures 67 inthearms 66 of the bell erank levers and springs 69 are interposed between the "arms 66 aind collars 70 which areadjustably secure d upon the ends of thearmsby nuts 71. The opposite 'endsof the rods 68 are' pivotally connected to arms-72 extending 'IIPWHICllYiIOlH the rock shaft 26. H

In the operation of the brake mechanism;

therefore',*the release of theshoulder" of the-rod '33 from engagement with the keeper l 3% will permit the spring-28 to draw the brake-actuating lever =27 upwardlyfl "thereby rocking the: shaft 26; and in addition to ap' plying the internal cylinder brake Will,"- through the arms 72,'movethe rods 68 rear-2 wardly longitudinally; thereby swinging ;the 2 bell crankwlever arms 66*about their pi vots &

and causingthe opposite arms 640i? said-bell crank lever, which carry the-cam followers 62,-to move'i-n a direction-to engage the cams 61 upon the brake arms51,and thereby force the brakessintoengagement manure heads of the warp beam. :Thus the cylinder brakes and- Qwarp beam .bi*akes are actuated con Jo ntly and by the same source'ot power;

By i 'e ason l'of this conjoint actuation of thecyli'n'd'er brakes and theiw'arp beam'bra'kes fromthesame source of power*tlie necessity of fine adjustments Which {would be requ'ired 5 if the-cylinder brake and ivarp be'anr brake were operated; iroinfmdependent soureesqiofiipowerare obviated Desirably the warpfibeam headsrare pres located improximity'tothe periphery of under face of the bracketblock 48 is proporting arm. The leaf spring is curved out- I vided with special frictional members to cooperatewith the brakes 54. As illustrated herein such frictional members comprise disks or flat annular plates 73 of fibre board, leather, or other suitable material, which i the warp beam.

In view of the fact thatthe application of a e imposes considerable force upon the gudgeons of the warp beam which may tend to throw the axes of the gudgeons slightly out of axial alinement, self-alining bearings for the gudgeons are provided which will maintain the hearings in effective alinement and will also keep the heads of the-warp beams warp beaniheads and are detachably sect thereto by screws 74, 'or other suitable rastening means, the heads of which are coun tersunk below the surfaces which are engaged bythe friction members55 of the brake shoes. By reason of this construction wear upon the heads ofthe warp beam is not only obviated, but the friction members maybe of such character as to provide a greater degree of friction than would begiven by the usual wooden warp beam heads. Furthermore,- these friction members can be; readily removed and replaced when worn, thus obvi ating also injury to warp beamheads which would require their replacement after eonsiderable usage, in the absence offriction members.

- In Fig. 3 amodified brake construction is illustrated in whichthe brake. or brakes are applied to theends of the warp beam by a spring or springs and are moved from and held in removed position by positively actuated mechanism. In this construction the plane of the brake shoes.

In order to accomplish this purpose novel gudgeonblocks are provided for supporting the gudgeons of the warp beam.- i

A preferred gudgeon block construction is illustrated in detailjinFigs. 4and 5. The lower face of. each gudgeon block 38 is provided with downwardly extending flanges 78 and 79 which extend below the track 39 upon thegudgeon-supporting arm and a central flange 80 extends downwardly through a slot ofthe gudgeon-supporting arm 40. The cension having at its lower end an aperture 82 lead to the mechanism for preventing increase in resulting pressure on thedriving drum due to the increase in the total weight of the beam and yarn as the yarn is wound upon the beam as-disclos'ed in the application of Draper and-Trevett above identified.

The gudgeon block 38 is formed in two vided with a suitable recess which receives the end portion of a powerful leaf spring 7 5, and this-end of the spring is fixedly clamped between the bracket 48 and the gudgeon-supwardly to present a cam-like surface 76 and thenextends longitudinally in parallelism with the brake arm a distanceequal to or somewhat greater than the path of movement of the cam follower 62 upon the arm 64 of the-bell crank lever. Theleaf spring is then curved inwardly into engagement with the outer face of the end portion 53 of the brake. arm and after extending along the end portion is bent around the outer end thereof to provide a hook 77 which engages the inner face of the brake arm-51. In this construction the leaf spring acts to force the brake into engagement withthe heads of the warp beam, but isnormally held out of engagement with the warp beam by the engagement of the cam follower 62 with the curved cam surface 76 of the spring.

In this construction the rods 68 are fixedly securedto the arm 66 ofthe' bell crank actuating levers as these levers, when actuated by depression of the pedal, move the cam followers 62 into engagement with the curved cam-like portion 76 of the spring, thereby moving the springs outwardly to relieve the pressure of the brakes upon the headsof the drums. The curved end portion 77 of the springs, which embraces the ends of the brake arms, also serve positively towithdraw the tension 86 adapted to be engaged by a looking pin 87 extending through a boss 88 pro- ]ecting upwardly between the arms of the tionof the gudgeon block.

The base of the gudg'eo'n block 38 and the upper section 84 are provided respectively with spherically concaved surfaces 89 and 90 which receive a complementary spherical surface 91 ofa bearing 92, one end of which is flush with the end of the gudgeon block, and the other end of which terminates short of the plane of the opposite endof the block. A bushing sleeve 93, having a head 94, is mounted within the spherical bearing 92 and is secured thereto by. screws 95, the head of the sleeve desirably beingflush with the end of the gudgeon block. The gudgeon 7 is rotat-ably mounted in the bushing sleeve 93.

The central portion of the bearing 92 is cut away to provide an annular chamber 96 for a lubricant. Aplurality of apertures extend through the bushing 93 and wooden plugs 97, having the grain extending longitudinally of the plugs, provide means for properly lubricating the gudgeon 7. I

the brakes tothe heads of the warp beams substantially in parallelism with'the vertical 81 (see Fig 2) in-thearcuate curved portion tral flange is also provided with anextenfor the'connectionof a chain 83 which may sections, the upper section 84 being pivotally connected to the lower'section by a pin at one side and provided with a bifurcated exbifurcated extension 86 from the'lower secbrakes-from engagement-with the heads of lot] The bearing 92 is provided with radial apertures in alinement with the wooden plugs to permit the insertion of the plugs and also to provide means for introducinglubricant into the chamber 96. These-apertures desirably are provided with tapered screwthreadedwalls-and are closed by tapered screw threaded plugs 98. The upper section 84 of the bearing block is provided with an aperparallelism of the planesof the friction surfaces upon the brake beam heads with the faces of the brakes, and also avoiding any tendency of wabbling of the brake beam during the warping operation. I

It will be understood that although the invention is herein described as applied to the particular form of warper disclosed in the application of Draper and 'lrevett above identified, it is also applicable to other types of warpers, particularly high speed warpers, and that the invention broadly includes the provision of a warp beam brake alone or supplemental to a similar brake of any character, and further that while in the preferred embodiment of the invention the warp beam brakes are applied simultaneously to both ends of the warp beams in a direction paral lel to the .aXis of the warp beam, a single warp beam brake may be employed, or other types of warp beam brakes may be used. It

will, therefore, be understood that t .e particular embodiment of the invention disclosed herein is of an illustrative character and is not restrictive of the scope and meaning of the claims.

Havln thus described the 1nvent1on what U i is claimed as new, and desired to be secured by Letters Patent, 1s:

1. A war er com T181110 a dr1v1n c rhnder a warp beam driven thereby, and having a head, said beam being mounted for bodily movement relative to said cylinder, a brake for said warp beam, and means for applying said brake to the head of said warp beam.

said warp beam, and means for moving the same in a direction substantially parallel with-the axis of said warp beam into engagement with the head of said warp beam.

4. A warper comprising a driving cylinder, warp beam having heads located beyond the *espective'ends of said driving cylinder, said beam being mounted for bodily movement relative to said cylind r, an annular'friction a brake located in co-operative relation to said disk, and means for moving said brake into engagement with said disk.

5. A warper comprising a driving cylinder, a warp beam having heads located beyond the respective ends of said driving cylinder, said beam being mounted for bodily movement relative to said cylinder, brakes at each end of said warp beam, and means for moving said brakes simultaneously in a di-..

rection substantially parallel with the axis of saidwarp beam into engagement with the respective heads of said warp beam.

6. A Warper comprising a driving cylinder,

a warp beam having heads located beyond the respective ends of said cylinder, said beam being mounted for bodily movement relative to said cylinder, flat annular friction disks detachably secured to the respective heads and having their peripheries lying im e proximity to the peripheries ofsaid heads, brakes at each end of said warp beamand means for moving the same simultaneously into engagement with said friction disks.

7. A warpercomprising a driving cylinder, a warp beam having heads andgudgeons, a pair of arcuate gudgeon-supportingarms extending forward of said cylinder, a-pair of gudgeon blocks supporting said beam gudgeons and movable along said arms as,

the yarn is wound upon'the'beam' by -frictional engagement ofthe cylinder therewith, a brake carried by one of said gudgeonsupporting arms, and means for applying said brake to the adjacent head of the warp beam.

8. A warper comprising adriving-cylinder, a warp beam having heads and gudgeons, a pair of arcuate gudgeon-supporting arms extending forward of said c'ylinder,'a pair 0t.

gudgeon blocks supporting said beam gudgeons and movable along said arms as the yarn iswound upon the beam by'frictional engagement of the cylinder therewith, brakes carried by the respective gudgeonsupporting arms, and means forapplying said. brakes simultaneously to the-respective ends of the warp beam in a direction substantially parallel with the axis ofsaid warp beam. 1

1 9. A warper comprising a driving cylinder, a warpbeam having heads and gudgeons, a pair of arcuate gudgeon-supporting arms extendingforward of said cylinder, a pairof gudgeon blocks supporting detachably secured to one of said heads,

said beam" arm pivoi a1 gudgeons and movable along said arms as the yarn is wound upon the beam by frictional engagement of the cylinder therewith, a brake arm pivots. J mounted upon one of said gudgeon-supporting arms havmg a brake positioned to move into engagement yarn is wound upon the seam ly frictional engagcmen of the cylinder therewith, a brake mounted on one of said gudgeon--suppor,mg arms having a pivotally mounted brake movable into engagement with the adjacent head of said warp beam, resilient means intermediate of said brake arm and said brake o-perable'to equalize the pressure of dili'erent portions of the surface area of said brake upon said head,and means for applying said brake.

11. A- warper comprising a driving cylinder, a warp beam having heads and gudgeons, a pair of arcuate gudgeon-supporting arms extending forward of said cylinder, a pair of gudgeon blocks supporting said beam gudgeons and movable along said arms as the yarn is wound upon the beam by frictional engagement of the cylinder therewith, a brake arm pivotally mounted on one of said gudgeon-supporting arms having a pivotally mounted brake movable into engagement with the adjacent head of said warp beam, resilient means acting on said brake arm normally holding said brake out of engagement with the warp beam head, and means including a cam and a relatively movable cam follower operable to apply said brake to the head of said warp beam.

' 12. A warper comprising a driving cylinder, a warp beam having heads and gudgeons, a pair of arcuate gudgeon-supporting arms extending forward of said cylinder, a pair of gudgeon blocks supporting saidbeam gudgeons and movable along said arms as the yarn is wound upon the beam by frictional engagement of the cylinder therewith, a brake arm pivotally mounted on said gudgeon-supporting arm provided with a cam face and having a brake positioned to engagethe adjacent head of the warp beam, a lever having means to engage said cam, and means for actuating said lever to cause the same to move the brake into engagement with i he head of the warp beam.

13. A warper comprising a driving cylinder, a warp beam driven thereby, a brake for said cylinder, a brake for said warp beam,

and means operable conjointly to apply said cylinder brake and said warp beam brake.

14:. A warper comprising a driving cylinder, a warpbeam driven thereby, a-brake for said cylinder, abrakefor' said warp beam, and means operable conjointly by the same source of power to apply saideylinder brake and said warp beam brake.

15. A warper comprising-a driving cylinder, a. warp beam driven thereby having heads located beyond the respective ends of said cylinder, internal brake for said cylinder, a brake movable into engagement with one of the heads ofsaid warp beam, and means operable by the same source of power conjointly to apply said cylinder brake and said warp beam brake.

16. A warper comprising a driving cylinder, a warp beam driven thereby having heads located beyond the respective ends of said cylinder, internal'brake for saidcylinder, a brake movable into engagement with one of the heads of said warp beam, and means for conjointly actuating said brakes inclucing a spring actuated lever, and means operable thereby conjointly. to apply said hinder brake and said warp beam brake.

17. A warper comprising a driving cylind r, a warp beam driven thereby having head located beyond the respective ends of said cylinder, internal brakes at each end of said cylinder, brakes movable into engagement with each of the heads of said warp beam, a. rock shaft having arms operable respectively to apply the cylinder brakes and the warp beam brakes at both ends of the cylinder and warp beam conjointly, and spring actuated means for rotating said rock shaft.

18. A warper comprising side frames, a driving cylinder, a warp beam having heads and gudgeons, a pair of gudgeon-supporting arms pivotally mounted on said side frames and extending forward of said cylinder, a pair of gudgeon blocks supporting said beam gudgeons and movable along said gudgeonsupporting arms as the yarn is wound upon the beam by frictional engagement of the cylinder therewith, brackets mounted on said gudgeon-supporting arms, brake arms pivote ally mounted on said brackets presenting cam faces and having pivotally secured adjacent their ends brake shoes movable into and out of engagement with the heads of said drums, resilient means normally holding said brakes out of engagement with said drum heads, levers pivotally mounted on said brackets having cam followers movable in parallelism with the planes of said heads to engage the cams upon said brake arms, arock shaft pivotally mounted in said frame having arms yieldably connected to said brake levers, and means for actuating said rock shaft including a spring actuated arm, a pedal connected to said rock shaft operable to impose" Iii a tension upon said actuating spring, and a detent connected to said brake actuating arm adapted to be released by the detector mechanism of the warper and thereby to per-.

mit said spring to apply the brakes.

19. A warper comprising a driving cylinder, a warp beam having heads and gudgeons, a pair of gudgeon-supporting arms extending forwardly of the cylinder, a pair of gudgeon blocks movable along the arms as the yarn is Wound upon the beam by frictional engagement with the warps thereof, a brake mounted on'one of said gudgeonsupporting arms operable to engage the head of the warp beam, and self-aligning bearings in said gudgeon blocks for said gudgeons operable to compensate the tendency of distortion of the gudgeons from axial alinement upon application of the brake.

20. A warper comprising a driving cylinder, a warp beam having heads and gudgeons,

pair of gudgeon-supporting arms extending forwardly of the cylinder, a pair of gildgeon blocks movable along the arms as the yarn is wound upon the beam by frictional engagement with the warps thereof, a brake mounted on one of said gudgeon-supporting arms operable to engage the head of the warp beam, and spherical bearing members in said gudgeon blocks to receive said gudgeons, lubricant reservoirs in said gudgeon blocks, and means for transmitting lubricant from said reservoirs to said gudgeons.

In testimony whereof, we have signed our I names to this specification.

EARL H. TREVETT. HARRY A. DAVIS. 

